#! /bin/sh
#
# @configure_input@
#
# Copyright (C) 1997, 1999 Free Software Foundation, Inc.
#
# Author: Scott Predescu <ovidiu@net-community.com>
# Author: Ovidiu Predescu <ovidiu@net-community.com>
# Date: February 1999
# 
# This file is part of the GNUstep Makefile Package.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# You should have received a copy of the GNU General Public
# License along with this library; see the file COPYING.LIB.
# If not, write to the Free Software Foundation,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

# Try to execute the GNUstep tool passed as argument. The tool is
# searched through the GNUstep directories if a complete or relative path name
# is not specified. The arguments passed after the tool name are passed
# unmodified to the tool.

if [ -z "$GNUSTEP_PATHLIST" ]; then
  echo "The GNUSTEP_PATHLIST environment variable is missing."
  echo "Did you forget to set up your environment using GNUstep.sh ?"
  exit 1
fi

if [ -z "$1" ]; then
  echo usage: `basename "$0"` [--library-combo=...] tool [arguments...]
  echo `basename "$0"` --help for help
  exit 1
fi

if [ -z "$EXEEXT" ]; then
  EXEEXT=@EXEEXT@
fi

# traps the parameters
while true
do 
  case "$1" in
    --library-combo=*)
        tmp_root="$GNUSTEP_SYSTEM_ROOT"
        . "$tmp_root/@MAKEFILES_SUFFIX@/GNUstep-reset.sh"
        LIBRARY_COMBO=`echo "$1" | sed 's/--library-combo=//'`
        . "$tmp_root/@MAKEFILES_SUFFIX@/GNUstep.sh"
        echo "Switched to library combo $LIBRARY_COMBO"
        shift
        ;;
    --help)
      echo usage: `basename "$0"` [--library-combo=...] tool [arguments...]
      echo
      echo tool is the complete or relative name of the tool executable
      echo without any extension, like defaults
      echo
      echo [arguments...] are the arguments to the tool.
      exit 0
      ;;
    *)
      break;;
  esac
done

tool="$1";
shift;

if [ -n "$EXEEXT" ]; then
  tool="$tool$EXEEXT"
fi

case "$tool" in
  /*)	# An absolute path.
  	full_toolname="$tool";;
  */*)	# A relative path
	tool_dir="`dirname \"$tool\"`"; 
	tool_dir="`(cd \"$tool_dir\"; pwd)`"; 
	tool_name="`basename \"$tool\"`";
	full_toolname="${tool_dir}/${tool_name}";;
  *)	# A path that should be searched into GNUstep tool paths

        # Search for a local tool

        # We used to scan all ./*/$(GNUSTEP_HOST_LDIR)/ directories,
        # but this facility was removed (GNUSTEP_HOST_LDIR is no
        # longer even defined in this file), now we perform a much
        # simpler search.

        # The really important one is looking into ./obj, anyway here
        # is the order in which we search local directories - 
        # First, we search in ./
        # Second, we search in ./obj
        # Third, we search in ./Tools/
        # Fourth, we search in ./Tools/obj
        for dir in . obj Tools Tools/obj; do
          # echo "$dir/$tool";
          if [ -x "$dir/$tool" ]; then
            full_toolname="$dir/$tool"
            # echo "Found: $dir/$tool";
            break;
          fi
        done

	if [ -z "$full_toolname" ]; then 
          
          # Local tool not found - Search for an installed one
          # we search in GNUSTEP_PATHLIST, which means we
          # search in the order in:
          # GNUSTEP_USER_ROOT
          # GNUSTEP_LOCAL_ROOT
          # GNUSTEP_NETWORK_ROOT
          # GNUSTEP_SYSTEM_ROOT
	  #
	  # We look in the GNUSTEP_HOST_CPU/GNUSTEP_HOST_OS/LIBRARY_COMBO
	  # subdirectory first, then the GNUSTEP_HOST_CPU/GNUSTEP_HOST_OS
	  # subdirectory, then the top-level directory.
	  # (For flattened systems we skip the first two options.
	  #
          if [ -n "$GNUSTEP_PATHLIST" ]; then
            SPATH="$GNUSTEP_PATHLIST"
	    IFS=:
	    for dir in $SPATH; do
	      tmpdir="$dir/Tools"
	      if [ -z "$GNUSTEP_FLATTENED" ]; then
	        tmpgnudir="$dir/Tools/$GNUSTEP_HOST_CPU/$GNUSTEP_HOST_OS"
                tmplibdir="$tmpgnudir/$LIBRARY_COMBO"
                # echo "$tmplibdir/$tool";
		if [ -x "$tmplibdir/$tool" ]; then
                  # echo "Found: $tmplibdir/$tool";
		  full_toolname="$tmplibdir/$tool"
		  break;
		fi
		if [ -x "$tmpgnudir/$tool" ]; then
                  # echo "Found: $tmpgnudir/$tool";
		  full_toolname="$tmpgnudir/$tool"
		  break;
		fi
	      fi
              # echo "$tmpdir/$tool";
	      if [ -x "$tmpdir/$tool" ]; then
                # echo "Found: $tmpdir/$tool";
		full_toolname="$tmpdir/$tool"
		break;
	      fi
	    done
	    unset tmpdir
	    unset tmpgnudir
	    unset tmplibdir
	    IFS=" "
          fi
        fi
        ;;
esac

if [ -z "$full_toolname" ]; then
  echo "Can't find the required tool: $tool!"
  exit 1
fi

IFS=" "
exec "$full_toolname" "$@"
